Co、Al对二次硬化钢微结构影响的穆谱研究  

INVESTIGATION ON INFLUENCE OFCo, Al ON MICROSTRUCTURES OFSECONDARY-HARDENING STEEL BYM6SSBAUER SPECTROSCOPY

作　　者：刘贵立[1] 张国英[1] 曾梅光[2] 钱存富[2] 

机构地区：[1]沈阳工业大学材料学院,沈阳110023 [2]东北大学

出　　处：《机械工程学报》2002年第12期149-152,共4页Journal of Mechanical Engineering

基　　金：国家"九五"科技攻关项目(98-A28-01-02)。

摘　　要：用穆谱技术研究了Co、Al元素对二次硬化钢微结构的影响,发现Co在二次硬化钢中的分布会影响Ni、Cr、Mo原子在其中的分布;Co、Al都促进奥氏体向马氏体转变,减少残余奥氏体量,都促进合金碳化物的形成,增加其析出量。因此在无Co钢中为提高强度可加入适量的Al元素。The influence of Co, Al on the microstructures of high Ni-Co secondary-hardening steel is studied by Mossbauer spectroscopy. Results show that distribution of alloying elements Ni, Cr, Mo are influenced by mass fraction of Co in martensite. Both Co and Al elements promote the translation of austenite to martensite during quenching, the amount of austenite decreases with increasing mass of fraction of Co or Al in steel, and Co or Al element also promotes the formation of alloying carbide during tempering , the quantity carbide increases with increasing mass of fraction of Co or Al in steel.

关 键 词：二次硬化钢 微结构 Moessbauer谱 超精细场 

分 类 号：TG142.33[一般工业技术—材料科学与工程]